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Kyle@FTP · 04-08-2014, 10:20 AM

68c10owner and blue rat seem to have you pointed in the correct direction. Im 3/4 the way through a 468 build. Had 781s but to make them right to get my 600hp+ number was around $1200. I found a solid set of dart 275 oval ports that should do the trick and bout them used ready to rock and roll for $1500. The motor will live at 6500 for 20 minutes at a time so a solid roller set up was in order. 310/310 .773/.773 was what george from clay smith specd. Steel 4" crank Crower 6.385 rod. Im a big fan of the long rod to slow the piston speed. and we are staying at 10:1 running 91 octane. or 110 when I put the N20o to it.

I think in a heavier truck like your doing the smaller oval port will work much better that a large rectangle port. It will help the bottom end torque and then that thing up and moving. 781 need to be in the right hands and a lot of money spent for a true 600hp bullet. Big valves are manditory and lots of short turn work and bowl work is needed. CStruab is great when it comes to cam selection. Also Scott Foxwell at Foxwell motorsports is a wealth of knowledge.

04-08-2014, 10:20 AM	#39
Kyle@FTP Registered User Join Date: Dec 2013 Location: Escondido Posts: 700	Re: Another 489bbc question 68c10owner and blue rat seem to have you pointed in the correct direction. Im 3/4 the way through a 468 build. Had 781s but to make them right to get my 600hp+ number was around $1200. I found a solid set of dart 275 oval ports that should do the trick and bout them used ready to rock and roll for $1500. The motor will live at 6500 for 20 minutes at a time so a solid roller set up was in order. 310/310 .773/.773 was what george from clay smith specd. Steel 4" crank Crower 6.385 rod. Im a big fan of the long rod to slow the piston speed. and we are staying at 10:1 running 91 octane. or 110 when I put the N20o to it. I think in a heavier truck like your doing the smaller oval port will work much better that a large rectangle port. It will help the bottom end torque and then that thing up and moving. 781 need to be in the right hands and a lot of money spent for a true 600hp bullet. Big valves are manditory and lots of short turn work and bowl work is needed. CStruab is great when it comes to cam selection. Also Scott Foxwell at Foxwell motorsports is a wealth of knowledge.